Final answer:
Zoologists often have naturalistic intelligence, enabling them to understand various aspects of the animal kingdom and their behaviors, physiology, and ecological roles.
Step-by-step explanation:
The type of intelligence that zoologists often have is d) Naturalistic intelligence. This kind of intelligence is part of Howard Gardner's Multiple Intelligences Theory and relates to the ability to recognize and categorize animals, plants, and other parts of the natural world. Zoologists, who specialize in the study of animals, make use of this intelligence in their work to understand animal behavior, physiology, and ecology, among other aspects of these living organisms.